As I've pointed out ad nauseum, the idea that Sloan always returned to playing his starting lineup while completely ignoring the effectiveness of bench players is a myth - but this isn't about comparing Sloan to Corbin. It's about comparing Corbin to a competent basketball coach (which I believe he is, but his substitution pattern is both illogical and maddening).
As Peter Vescey (who I generally loathe) points out, it's the head coach's job to coach the game and make decisions based off the game. How many times in the regular season did we see Utah's bench (often behind Derrick Favors) get Utah back in a game, only to see Corbin return to his full starting lineup and flounder down the stretch. Coaches are paid to put their players in the best position to succeed. If Ty's going to be a complete robot, why even coach? Even the CPU of a video game can substitute his starters in for the 4th-qtr. If the only reason you're in the playoffs is because of a 2-week stretch in which Demarre Carroll is you starting SF, why change the lineup in favor of a 32-yr old SF who was out the previous 4 weeks due to knee surgery? All people want is for Ty to start making more decisions off how the game is playing out, not who he listed as starters on the gamecard.